fox
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4.absorption of calcium from the intestinal tract results principally from the direct action of which of the following?
a.1,25-dihydroxycholecaciferol*
b.25-hydroxycholecalcierol
c.calcitonin
d.cyclic amp
e.PTH
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| ssrpk
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a.1,25-dihydroxycholecaciferol* [ a steroid hormone - increase synthesis of Ca++ transporters in the intestinal epithelials]
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| Ig F
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1,25_DIHYDROCHOLECALCIFEROL* increases the absorption of calcium and phosphate from the intestinalmucosa by increasing the production of Ca++ binding proteins.....so A is the correct answer
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| vallia
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agree
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